Global Earthquake Model Global Seismic Hazard Map The Global Seismic Hazard Map depicts the geographic distribution of the Peak Ground Acceleration (PGA) with a 10% probability of being exceeded in 50 years, computed for reference rock conditions (shear wave velocity, VS30, of 760-800 m/s). The map was created by collating maps computed using national and regional probabilistic seismic hazard models developed by various institutions and projects, and by Global Earthquake Model Foundation scientists. The OpenQuake engine, an open-source seismic hazard, and risk calculation software developed principally by the Global Earthquake Model Foundation were used to calculate the hazard values. A smoothing methodology was applied to homogenize hazard values along the model borders. The map is based on a database of hazard models described using the OpenQuake engine data format (NRML); those models originally implemented in other software formats were converted into NRML. While translating these